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TMS320DM647 Datasheet(PDF) 23 Page - Texas Instruments |
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TMS320DM647 Datasheet(HTML) 23 Page - Texas Instruments |
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23 / 166 page  www.ti.com TMS320DM647/TMS320DM648 Digital Media Processor SPRS372 – MAY 2007 Table 2-4. TERMINAL FUNCTIONS (continued) TERMINAL NAME NO TYPE INTERNAL OPER DESCRIPTION PULLUP/ VOLT PULLDOWN CONFIGURATION AND EMIFA DEVICEENABLE0/AE F2 I/O/Z IPD 3.3 V EMIFA External Address 20 (word address) (O/Z) For proper A20 device operation, this pin must be externally pulled up with a 1-k Ω resistor at device reset EMIFAWIDTH/AEA22 G3 I/O/Z IPD 3.3 V EMIFA External Address 22 (word address) (O/Z) EMIFA data bus width selection pin state captured at the rising edge of RESET. 0 sets EMIFA CS2 to 8 bit data bus width 1 sets EMIFA CS2 to 16 bit data bus width. For details. see Section 3. FASTBOOT/AEA21 G2 I/O/Z IPD 3.3 V EMIFA External Address 22 (word address) (O/Z) Enables FAST BOOT of the device. For details see Section 3. UHPIEN H2 I IPD 3.3 V UHPI enable pin. This pin controls the selection (enable/disable) of the HPI and GPIO[0:7] muxed with PCI. For details see Section 3. HPIWIDTH/AEA16 H3 I/O/Z IPD 3.3 V EMIFA External Address 16 (word address) (O/Z) HPI peripheral bus width (HPI_WIDTH) select [Applies only when HPI is enabled; UHPIEN pin = 1] RSVBOOT/AEA15 H6 I/O/Z IPU 3.3 V EMIFA External Address 15 (word address) (O/Z) For proper device operation, this pin must be externally pulled up with a 1-k Ω resistor at device reset PCI66/AEA18 G5 I/O/Z IPD 3.3 V PCI Frequency Selection (PCI66). The PCI peripheral must be enabled (UHPIEN = 0) to use this function.PCI66_AEA18 selects the PCI operating frequency of 66 MHz or 33 MHz. PCI operating frequency is selected at reset via the pullup/pulldown resistor on the PCI66 pin:AEA18: 0 - PCI operates at 33 MHz (default) 1 - PCI operates at 66 MHz. BOOTMODE0/AEA11 F3 I/O/Z IPD 3.3 V 0000 Master mode - Emulation Boot BOOTMODE1/AEA12 F4 0001 Slave mode - HPI Boot (if UHPIEN = 1) BOOTMODE2/AEA13 F5 or PCI Boot (if UHPIEN = 0) without auto-initialization BOOTMODE3/AEA14 G6 0010 Slave mode - HPI Boot (if UHPIEN = 1) or PCI Boot (if UHPIEN = 0) with auto-initialization 0011 Master mode - UART boot without flow control 0100 Master mode - EMIFA CS2 direct/fast boot 0101 Master mode - I2C boot 0110 Master mode - SPI boot 0111 Reserved 1000 Master mode - 3-port Ethernet Subsystem boot through SGMII0 for DM647 only Reserved in DM648 1001 Master mode - 3-port Ethernet Subsystem boot through SGMII0 for DM648 only Reserved in DM647 1010 Master mode - 3-port Ethernet Subsystem boot through SGMII1 for DM648 only Reserved in DM647 1011 Reserved 1100 Reserved 1101 Reserved 1110 Master mode - UART boot with flow control 1111 Reserved INTER-INTEGRATED CIRCUIT (I2C) SCL0 D22 I/O/Z 3.3 V I2C clock. When the I2C module is used, use an external pullup resistor. SDA0 C23 I/O/Z 3.3 V I2C data. When I2C is used, make certain there is an external pullup resistor. Submit Documentation Feedback Device Overview 23 |
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